Plant Nutrition Quiz

What is one of the criteria for an element to be considered essential for plants?

• It is directly involved in plant metabolism.

• It is not involved in plant metabolism.

• It can be replaced by another element.

• The plant can complete its life cycle without it.

How do plants primarily absorb nitrogen from the atmosphere?

• Directly from the air.

• Through their leaves.

• In the form of nitrates and ammonium.

• By absorbing nitrogen gas.

Which of the following is NOT a component that nitrates contribute to in plants?

• Photosynthetic pigments

• Chlorophyll

• Vitamins

• Proteins

What is the role of magnesium in chlorophyll?

• It acts as a pigment.

• It is present in the center of the porphyrin structure.

• It is a peripheral element.

• It is not involved in chlorophyll.

Which process is magnesium NOT involved in?

• Protein degradation

• DNA synthesis

• Respiration

• Photosynthesis